Mouth Morphemes
intense = ee
casual = hmm
smooth = oo
long = sta sta
sluggish = tongue out
explosive = bah

​Example: Legs

3D Examples
They are kicking hard. (ee) 
Let’s sunbathe leisurely. (hmm) 
The person flips smoothly. (oo) 
We are walking so long. (sta sta) 
They are running lazily. (tongue out) 
We are running really fast. (explosive)